Our colleagues from The age of extinction, Phoebe Weston and Patrick Greenfield, are back with two new episodes. We often talk as if we know what species exist in the world \u2013 but we don\u2019t. Could misclassifying the notoriously cryptic fungi have broader implications for what we know about the environment, and how we care for it?. Help support our independent journalism at theguardian.com/sciencepod